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| author | Mikulas Patocka <mpatocka@redhat.com> | 2018-07-25 15:41:56 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2018-07-25 15:41:56 +0200 |
| commit | 7433914efd584b22bb49d3e1eee001f5d0525ecd (patch) | |
| tree | 336d2501e243b6fcaf72e1017f2ed70e670f0670 /include/video | |
| parent | 0ac319b7af1bb24a33365d0ec82a2f56a59b2a78 (diff) | |
| download | linux-7433914efd584b22bb49d3e1eee001f5d0525ecd.tar.bz2 | |
udlfb: allow reallocating the framebuffer
This patch changes udlfb so that it may reallocate the framebuffer when
setting higher-resolution mode. If we boot the system without monitor
attached, udlfb creates a framebuffer with the size 800x600. This patch
makes it possible to select higher videomode with the fbset command when
a monitor is attached.
Note that there is no reliable way to prevent the system from touching the
old framebuffer, so we must not free it. We add it to the list
dlfb->deferred_free and free it when the driver is unloaded.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
[b.zolnierkie: sparse fixes]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'include/video')
| -rw-r--r-- | include/video/udlfb.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/video/udlfb.h b/include/video/udlfb.h index 6e1a2e790b1b..3abd327bada6 100644 --- a/include/video/udlfb.h +++ b/include/video/udlfb.h @@ -58,6 +58,7 @@ struct dlfb_data { atomic_t bytes_sent; /* to usb, after compression including overhead */ atomic_t cpu_kcycles_used; /* transpired during pixel processing */ struct fb_var_screeninfo current_mode; + struct list_head deferred_free; }; #define NR_USB_REQUEST_I2C_SUB_IO 0x02 |